Water treatment device



FIG. 1 is a top perspective view of a water treatment device, showing the new design;

FIG. 2 is a back view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line disclosure represents portions of the water treatment device which form no part of the claimed design. 

CLAIM I claim the ornamental design for a water treatment device, as shown and described. 